Steam and hot water boiler



May 26, 1931. o. a. OLMSTEAD 1,307,249

s'rm AND nor WATER BOILER Filed llay 15, 1929 3 Sheets-Sheet 1 W1 TNESSBY Z ffmvma W T TORNEYS.

May 26, 1931.

' WITNESS o. B. OLMSTEAD 1,807,249

s'rmu AND 501' WATER BOILER Fil d lay 15.1929 3 Sheets-Sheet 2 Maw May26, 1931. o. a. OLMSTEAD 7,

STEAI AND HOT WATER 1301mm Filed lay 15, 1929 3 Sheets-Sheet 5 10')IIIIIIIIIIII.

M m f m7 Patented May 26, 1931 -f UNITED STATES ORIMELL B. OLMSTEAD, OFPULASKI, NEW YORK STEAM AND HOT WATER BOILER Application filed. May 15,1929. Serial No. 363,237.

This invention relates to a boiler adapted to supply heat and moistureto any distributing system of corresponding capacity such for example asmay be required for house, garages,

5 store and factory heating and also for gar-.

ment pressing machines and other uses where heat, power and moisture maybe required.

The main object is to obtain a rapid conversion of relatively cold Waterinto hot water and steam with a minimum consumption of fuel by causingthe water to traverse the combustion chamber through a relatively largenumber of shallow channels in transit from the cold water inlet to thehot water or steam outlet.

Other objects and uses will be. brought out in the followingdescription.

In the drawings Fig. 1 is a perspective view of a boiler embodying thevarious features of my invention.

Fig. 2 is a perspective View of the detached water-leg with the tubularchannels thereon together with the base upon which the waterleg ismounted.

Fig. '3 is a perspective view of the waterleg and base omitting thetubes.

Fig. 4 is an enlarged vertical sectional View taken in the plane of line44, Fig. 1.

Figs. 5 and 6 are horizontal sectional views taken in the planes oflines 5-5 and 6-6 respectively, Fig. 4.

,As illustrated, stantially rectangular'horizontal base 1 upon which ismountedan upright rectangular casing forming the four walls 2, 3, 4 and5 and top wall 6 of a combustion chamber 7.

The base 1, upright wall 2, and top wall '6 are preferably made of castmetal, while the remaining upright walls 3, 4, and 5 are preferably madeof sheet metal and heat insulating materials constructed and assembledin the manner hereinafter described to reduce to a minimum the radiationof heat from thecombustion chamber to the exterior of the boiler.

The upright wall 2 preferably consists of a "hollow rectangular shell ofcast steel made in one piece toform, what-may be'termed, an uprightwater-leg having a water and steam his boiler comprises a subchamber 8having its inclosing walls relatively thin but of uniform thickness toafiord a comparatively large capacity for the water and steam.

The base 1 and casing mounted thereon are preferably elongatedhorizontally in one direction and, therefore, the hollow uprightwater-leg 2 may be regarded as one of the endwalls of the combustionchamber, said water-leg and its chamber 8 being relatively shallowhorizontally and extending from side to side and from top to bottom ofthe boiler to assist in rapid conversion of the cold water into hotwater and steam as may be desired.

The outer and inner end walls of the waterleg 2 are connected byintegral stays or braces 9 arranged at suitably .spaced intervalsthroughout the areas thereof to firmly hold said wall against buckling,while permitting their expansion and contraction without over-strainingany of its parts. i

' The inner end wall of the water-leg 2 is provided With a multiplicityof apertures 10 arranged in vertical spaced parallel horizontal rowsthroughout the major portion of the area thereof, those of adjacent rowsbeing arranged in staggered horizontal spaced re lation for receivingone end of a corresponding number of water-and-steam tubes 11 whichextend inwardly from the inner wall of the water-leg 2 across thecombustion chamber 7. 7

That is, the tubes 11 are threaded at one end and screwed into thecorresponding thread openings 10 to extend inwardly therefrom lengthwiseof and across the combustionchamber to approximately the end wall 3 butin slightly spaced relation thereto to permit endwise expansion of thetubes under varying temperatures.

The extreme inner ends of the tubes ll are closed and are preferablyangular or square in cross-section to permit the application of a wrenchor similar device thereto for tightening or loosening the tubes in theirrespec tive openings 10.

The tubes of each row are slightly inclined inwardly and downwardly fromthe inner wall of the water-leg 2, as shown in Fig. 4,

"to facilitate the circulation of water and.

remaining portion of the water-leg being sub stantially flat to restupon the flatupperface of the base thereby to assist in holding thewater-leg in its upright position.-

If desired, the lower ends of the upright sides of the waterleg 2 may beprovided with aligned clean-out openings 15 to permit any sediment whichmay accumulate in the bottom of the water-le to be conveniently removed,said openings being normallyclos'ed by plugs 16, Fig. 6. r

The remaining upright walls 3, 4 and'5 of the casing may be continuous,as shown'in Figs. 5 and 6, except that the wall 4 is provided with afuel inlet opening 17 for receiving a gas burner 18 or other suitableheater 7 which when installed is adapted to rest upon the upper face ofthe base 1, as shown in F ig. 4,'said burner being provided with anextension 19 projected outwardly through the opening 17 and connected bya pipe-20 to any available source of gas supplywhieh iscontrolled byvalves 21 and 22.

The upright walls .3, 4 and 5 extend from the base 1 to the top wall6-and are preferably composed of outer and inner U-shaped sheet metalsections 23 and 24 arranged in uniformallyspaced relation throughouttheir areas and receiving between them a filling 25 of asbestos or othersuitable heat insulating material. a 1

The ends of the sheetmetal section 23 overlap upon the opposite uprightsides of the water-leg 2 andare secured thereto by bolts 26 orequivalent fastening means, as'shown more clearly in Fig. 5, saidoverlapping ends being provided with openings for receiving the plugs16, as shown in Fig. 6.

The lower and upper ends'of 'the outer U-shaped sheet metal section 23overlap upon the corresponding'outer face of the base 1 and top section6 and are secured thereto by bolts 27 or equivalent fastening means, asshown in Fig. 4. r r

The opposite ends of the inner U-shaped sheet metal section 24 and alsothe ends of the U-shaped filler section 25 abut against the'inner faceof the water-leg 2, as shown in Figs; 5 and 6, and are clamped togetherat suitable intervals throughout their areas by clamping bolts 28, asshown more clearly in Fig. -5, to form a unitary U-shaped structurewhich tricocks;

Water-leg 2 by simply tightening or 1o0sen ing the bolts 26 and 27.

It will. be observed upon reference to Fig. 4, that the lower and upperends of the inner U-shaped section 24 and filler 25 respectively abutagainst the upper face of the base 1 and lower face of the-top section6. p

I The top section 6 overlaps upon the upper face. of the water-leg 2 andis secured thereto by. bolts 29 or equivalent fastening means tohold'the top section in fixed relation to the water-leg, theremainingportions of the top section being supported by the upright U-shaped-sections. 23,2 1 and 25, said top section being provided with acentral outlet 30 to permit-the escape-0f the products ofcombustion-toasuitable-fiue or stack,not shown.v

' VVhe'nthe water-leg 2 is secured bythe bolts 14 to the base 1, it maybe additionally held in an upright positionby one or more braces '31-having its lower end bolted or otherwise secured to one side of the baseand its upper end firmly secured to :the innerfaceof the water-leg 2, asshown in Fig. 2. v

r A water supply-pipe32 leading. fromany available source of supply isconnected'to the interior of the water-leg 2 near the lower end thereofand is providedwith a valve.32 operatable at will forcontrolling thewater supply to the boiler.

' The-'Water leg2 is provided near its upper end with av series of, inthis instance, three outlet pipes 34, 35 and-36, one of which, as 34,may be connected .toany suitable distributin'gsystem for the hotwater'or steam, the pipe35 being provided with a safety valve 37,-whilethe pipe 36 is .provi-ded'with a steam gage. 38, the lower end of thewaterlegis provided with a blow-01f pipe 39 having a valve 39 which whenopened permits the sediment and other matter to be blown out to asuitable waste pipe, not shown.

The height of the water in the wate'rdeg 2 may be visually indicated bya water gage 40 having valve connections, 41 and 42 with the interior ofthe water-leg below and above the water level respectively, the-lowervalve connectionel being provided with the usual Operation I If boileris to be used for theconversion of waterinto steam, the valve 32 in thesupply pipe 32 will be opened to allow the water to enter the water leg2 and water tubes 120 11 until it reaches a predeterminedleveli'sufficient to maintain a steam chamber above the water levelwhereupon the valve 32 may be closed.

The gasin the burner 18 may then beig nited after opening the valves 21and 22 to cause the heat developed-by the burner to pass upwardlythrough the combustion chamber thereby causing the heatedproductsof maybe clamped to or removed from thecombustion to envelop. allthe tubes intransit to the outlet 30, the same time impinging against the inner wallof the waterleg 2 to heat the water therein and also Within the tubes 12and to convert the water into steam which is then delivered through thepipe 34: to the distributing system, not shown.

If the boiler is to be used for hot water circulation, the outlet fromthe distributing system may be returned to the inlet 32 so that thecirculation of the hot water may be substantially continuous.

It will be observed that the tubes 11 are supported entirely by theWater-leg 2 and that they are free to expand and contract independentlyof each other and of the Waterleg thereby avoiding any strains upon thejoints between the tubes and water-leg.

It will also be observed that each tube may be tightened or loosenedindependently of the others for repairs or replacements.

Another advantage of the invention is that the water-leg with the tubesthereon may be removed or replaced from and upon the base 1 by simplyremoving the bolts 14 and dis- *1; connecting the brace 31.

A further advantage of the construction described is that the jacketcomprising the. walls 3, 4 and 5 may be removed and replaced from andupon the base by simply removing the top plate 6 and bolts 26 and 27,the bolts 26 being tapped into thickened portions of the Water-legwithout completely penetrating the walls 'of the water-leg.

What I claim is:

In a water-heater, a rectangular base frame, a hollow upright water-legsecured to and rising from the rear side of the base frame and providedwith Water tubes extending forwardly from the front Wall thereof overthe base frame, said Water leg being closed at its upper and lower ends,lugs depending from the water leg and anchored to the inner face of aside of the base frame, and a diagonal brace connecting the upperportion of the water-leg with another side of the base frame.

In witness whereof I have hereunto set my hand this 2nd day of May,1929.

ORIMELL B. OLMSTEAD.

